本文整理了Java中java.util.BitSet.cardinality()方法的一些代码示例，展示了BitSet.cardinality()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。BitSet.cardinality()方法的具体详情如下：
包路径：java.util.BitSet
类名称：BitSet
方法名：cardinality

BitSet.cardinality介绍

[英]Returns the number of bits that are true in this BitSet.
[中]返回此位集中为真的位数。

代码示例

代码示例来源：origin: skylot/jadx

public static List<BlockNode> bitSetToBlocks(MethodNode mth, BitSet bs) {
  int size = bs.cardinality();
  if (size == 0) {
    return Collections.emptyList();
  }
  List<BlockNode> blocks = new ArrayList<>(size);
  for (int i = bs.nextSetBit(0); i >= 0; i = bs.nextSetBit(i + 1)) {
    BlockNode block = mth.getBasicBlocks().get(i);
    blocks.add(block);
  }
  return blocks;
}

代码示例来源：origin: mpetazzoni/ttorrent

public PieceStorageImpl(TorrentByteStorage fileCollectionStorage,
            BitSet availablePieces,
            int piecesCount,
            int pieceSize) {
 this.fileCollectionStorage = fileCollectionStorage;
 this.readWriteLock = new ReentrantReadWriteLock();
 this.piecesCount = piecesCount;
 this.pieceSize = pieceSize;
 BitSet bitSet = new BitSet(piecesCount);
 bitSet.or(availablePieces);
 if (bitSet.cardinality() != piecesCount) {
  this.availablePieces = bitSet;
 }
 isOpen = false;
}

代码示例来源：origin: google/guava

static CharMatcher from(BitSet chars, String description) {
 // Compute the filter.
 long filter = 0;
 int size = chars.cardinality();
 boolean containsZero = chars.get(0);
 // Compute the hash table.
 char[] table = new char[chooseTableSize(size)];
 int mask = table.length - 1;
 for (int c = chars.nextSetBit(0); c != -1; c = chars.nextSetBit(c + 1)) {
  // Compute the filter at the same time.
  filter |= 1L << c;
  int index = smear(c) & mask;
  while (true) {
   // Check for empty.
   if (table[index] == 0) {
    table[index] = (char) c;
    break;
   }
   // Linear probing.
   index = (index + 1) & mask;
  }
 }
 return new SmallCharMatcher(table, filter, containsZero, description);
}

代码示例来源：origin: apache/ignite

for (int j = 0; j < selectedNodesCnt; j++)
        if ((mask & (1 << j)) != 0) {
          boolean connected = connections[indexes[i]].get(indexes[j]);
BitSet resSet = new BitSet(selectedNodesCnt);
    int idx = indexes[i];
    assert selectedSet.get(idx)
      : "Result contains node which is not presented in income set [nodeIdx" + idx + ", set=" + selectedSet + "]";
    resSet.set(idx);
assert resSet.cardinality() > 0
  : "No nodes selected as fully connected component [set=" + selectedSet + "]";

代码示例来源：origin: stackoverflow.com

BitSet temp2 = new BitSet();
      temp2.set(j);
      bitMap.put(temp1, temp2);
    } else {
      bitMap.get(temp1).set(j);
BitSet resultGetter = new BitSet(params[this.L]);
resultGetter.set(0, params[this.L] + 1, true);
Iterator<BitSet> itr = bitMap.keySet().iterator();
BitSet temp3 = new BitSet();
  if (bitMap.get(temp3).cardinality() == params[this.N]) {
    if (temp3.cardinality() <= resultGetter.cardinality()) {
      resultGetter = temp3;
if (resultGetter.cardinality() > params[this.L])
  retVal = -1;
else
  retVal = resultGetter.cardinality();

代码示例来源：origin: apache/incubator-druid

private static <T> List<T> filterByBitset(List<T> list, BitSet bitSet)
{
 final ArrayList<T> outList = new ArrayList<>(bitSet.cardinality());
 for (int i = 0; i < list.size(); ++i) {
  if (bitSet.get(i)) {
   outList.add(list.get(i));
  }
 }
 return outList;
}

代码示例来源：origin: apache/flink

@Override
public void invoke(Integer value) throws Exception {
  numElements++;
  if (duplicateChecker.get(value)) {
    throw new Exception("Received a duplicate: " + value);
  }
  duplicateChecker.set(value);
  if (numElements == numElementsTotal) {
    // validate
    if (duplicateChecker.cardinality() != numElementsTotal) {
      throw new Exception("Duplicate checker has wrong cardinality");
    }
    else if (duplicateChecker.nextClearBit(0) != numElementsTotal) {
      throw new Exception("Received sparse sequence");
    }
    else {
      throw new SuccessException();
    }
  }
}

代码示例来源：origin: mpetazzoni/ttorrent

/**
 * Piece download completion handler.
 * <p/>
 * <p>
 * If the complete piece downloaded is valid, we can record in the torrent
 * completedPieces bit field that we know have this piece.
 * </p>
 *
 * @param peer  The peer we got this piece from.
 * @param piece The piece in question.
 */
@Override
public void handlePieceCompleted(SharingPeer peer,
                 Piece piece) throws IOException {
 // Regardless of validity, record the number of bytes downloaded and
 // mark the piece as not requested anymore
 myTorrentStatistic.addDownloaded(piece.size());
 this.requestedPieces.set(piece.getIndex(), false);
 logger.trace("We now have {} piece(s) and {} outstanding request(s): {}",
     new Object[]{
         this.completedPieces.cardinality(),
         this.requestedPieces.cardinality(),
         this.requestedPieces
     });
}

代码示例来源：origin: mpetazzoni/ttorrent

BitSet availablePieces = peer.getAvailablePieces();
for (int i = availablePieces.nextSetBit(0); i >= 0;
   i = availablePieces.nextSetBit(i + 1)) {
 this.pieces[i].noLongerAt(peer);
if (requested != null) {
 for (Piece piece : requested) {
  this.requestedPieces.set(piece.getIndex(), false);
    new Object[]{
        peer,
        availablePieces.cardinality(),
        this.completedPieces.cardinality(),
        this.pieces.length
    });
logger.trace("We now have {} piece(s) and {} outstanding request(s): {}",
    new Object[]{
        this.completedPieces.cardinality(),
        this.requestedPieces.cardinality(),
        this.requestedPieces
    });

代码示例来源：origin: skylot/jadx

public static BlockNode getPathCross(MethodNode mth, BlockNode b1, BlockNode b2) {
  if (b1 == null || b2 == null) {
    return null;
  }
  BitSet b = new BitSet();
  b.or(b1.getDomFrontier());
  b.and(b2.getDomFrontier());
  b.clear(b1.getId());
  b.clear(b2.getId());
  if (b.cardinality() == 1) {
    BlockNode end = mth.getBasicBlocks().get(b.nextSetBit(0));
    if (isPathExists(b1, end) && isPathExists(b2, end)) {
      return end;
    }
  }
  if (isPathExists(b1, b2)) {
    return b2;
  }
  if (isPathExists(b2, b1)) {
    return b1;
  }
  return null;
}

代码示例来源：origin: apache/ignite

BitSet canUse = new BitSet(selectedNodesCnt);
for (int i = 0; i < selectedNodesCnt; i++)
  canUse.set(i);
  if (bestRes != null && canUse.cardinality() <= bestRes.cardinality())
    break;
  BitSet currRes = new BitSet(selectedNodesCnt);
      currRes.set(pickedIdx);
      canUse.set(pickedIdx, false);
  if (bestRes == null || currRes.cardinality() > bestRes.cardinality())
    bestRes = currRes;
  if (!bestRes.get(nodeIdx) && joinNode(bestRes, nodeIdx, nodeIndexes))
    bestRes.set(nodeIdx);
BitSet reindexedBestRes = new BitSet(totalNodesCnt);
Iterator<Integer> it = new BitSetIterator(bestRes);
while (it.hasNext())

代码示例来源：origin: apache/ignite

/**
 *
 */
@Test
public void testFind() {
  BitSet[] matrix = provider.provide();
  int nodes = matrix.length;
  BitSet all = new BitSet(nodes);
  for (int i = 0; i < nodes; i++)
    all.set(i);
  FullyConnectedComponentSearcher searcher = new FullyConnectedComponentSearcher(matrix);
  BitSet res = searcher.findLargest(all);
  int size = res.cardinality();
  Assert.assertTrue("Actual = " + size + ", Expected = " + minAcceptableRes,
    size >= minAcceptableRes);
}

代码示例来源：origin: linkedin/cruise-control

/**
 * @return the number of windows with extrapolations.
 */
public synchronized int numWindowsWithExtrapolation() {
 int currentIdx = arrayIndex(currentWindowIndex());
 int numExtrapolationAdjustment = _extrapolations.get(currentIdx) ? 1 : 0;
 return _extrapolations.cardinality() - numExtrapolationAdjustment;
}

代码示例来源：origin: mpetazzoni/ttorrent

/**
 * Mark a piece as completed, decrementing the piece size in bytes from our
 * left bytes to download counter.
 */
public synchronized void markCompleted(Piece piece) {
 if (this.completedPieces.get(piece.getIndex())) {
  return;
 }
 // A completed piece means that's that much data left to download for
 // this torrent.
 myTorrentStatistic.addLeft(-piece.size());
 this.completedPieces.set(piece.getIndex());
 if (completedPieces.cardinality() == getPiecesCount()) {
  logger.info("all pieces are received for torrent {}. Validating...", this);
 }
}

代码示例来源：origin: prestodb/presto

static CharMatcher from(BitSet chars, String description) {
 // Compute the filter.
 long filter = 0;
 int size = chars.cardinality();
 boolean containsZero = chars.get(0);
 // Compute the hash table.
 char[] table = new char[chooseTableSize(size)];
 int mask = table.length - 1;
 for (int c = chars.nextSetBit(0); c != -1; c = chars.nextSetBit(c + 1)) {
  // Compute the filter at the same time.
  filter |= 1L << c;
  int index = smear(c) & mask;
  while (true) {
   // Check for empty.
   if (table[index] == 0) {
    table[index] = (char) c;
    break;
   }
   // Linear probing.
   index = (index + 1) & mask;
  }
 }
 return new SmallCharMatcher(table, filter, containsZero, description);
}

代码示例来源：origin: mpetazzoni/ttorrent

/**
 * Peer choked handler.
 * <p/>
 * <p>
 * When a peer chokes, the requests made to it are canceled and we need to
 * mark the eventually piece we requested from it as available again for
 * download tentative from another peer.
 * </p>
 *
 * @param peer The peer that choked.
 */
@Override
public synchronized void handlePeerChoked(SharingPeer peer) {
 Set<Piece> pieces = peer.getRequestedPieces();
 if (pieces.size() > 0) {
  for (Piece piece : pieces) {
   this.requestedPieces.set(piece.getIndex(), false);
  }
 }
 logger.trace("Peer {} choked, we now have {} outstanding " +
         "request(s): {}.",
     new Object[]{
         peer,
         this.requestedPieces.cardinality(),
         this.requestedPieces
     });
}

代码示例来源：origin: google/guava

final BitSet table = new BitSet();
setBits(table);
int totalCharacters = table.cardinality();
if (totalCharacters * 2 <= DISTINCT_CHARS) {
 return precomputedPositive(totalCharacters, table, toString());

代码示例来源：origin: apache/kylin

public ImmutableBitSet(BitSet set) {
  this.set = (BitSet) set.clone();
  this.arr = new int[set.cardinality()];
  int j = 0;
  for (int i = set.nextSetBit(0); i >= 0; i = set.nextSetBit(i + 1)) {
    arr[j++] = i;
  }
}

代码示例来源：origin: skylot/jadx

if (s.getIDom() != block) {
    if (domFrontier == null) {
      domFrontier = new BitSet(blocks.size());
    domFrontier.set(s.getId());
  for (int p = frontier.nextSetBit(0); p >= 0; p = frontier.nextSetBit(p + 1)) {
    if (blocks.get(p).getIDom() != block) {
      if (domFrontier == null) {
        domFrontier = new BitSet(blocks.size());
      domFrontier.set(p);
if (domFrontier == null || domFrontier.cardinality() == 0) {
  domFrontier = EMPTY;

代码示例来源：origin: apache/hive

BitSet bs = new BitSet(numBuckets);
bs.clear();
PrimitiveObjectInspector bucketOI = (PrimitiveObjectInspector)bucketField.getFieldObjectInspector();
   ObjectInspectorUtils.getBucketNumber(convCols, new ObjectInspector[]{constOI}, numBuckets) :
   ObjectInspectorUtils.getBucketNumberOld(convCols, new ObjectInspector[]{constOI}, numBuckets);
 bs.set(n);
 if (bucketingVersion == 1 && ctxt.isCompat()) {
  int h = ObjectInspectorUtils.getBucketHashCodeOld(convCols, new ObjectInspector[]{constOI});
  bs.set(n);
if (bs.cardinality() < numBuckets) {